1. Phosphorus a. Phosphorus was discovered by the German alchemist Henning Brand. b. Phosphorus was discovered in 1674 or 1675.
2. Symbol: p, Atomic number:15, and Atomic mass: 30.97376 amu a. The sources of symbol is from the Greek words phos (light) and phoros (bearer)
3. Number of protons& element:15 ,neutrons:16
4. We can obtained from Phosphate rock
5. Physical facts a. Melting point: 44.1 °C (317.25 K, 111.38 °F) b. Boiling point: 280.0 °C (553.15 K, 536.0 °F) c. Destiny: 1.82 g/cm3 d. Abundance in the Earth’s crust: 1,050 parts per million by weight, 730 parts per million by moles
6. Use: fertilizers, detergents
7. Interesting facts: Hennig Brand discovered phosphorus in 1669, preparing it from urine, which naturally contains considerable quantities of dissolved phosphates. The name comes from the Greek word 'phosphoros', meaning bringer of light.
8. Sources: Never found free in nature, It is widely distributed in combination with minerals. Phosphate rock, which contains the mineral apatite, an impure tri-calcium phosphate, is an important source of the element. Large deposits are found in Russia, in Morocco, and in Florida, Tennessee, Utah, Idaho, and elsewhere.
1. Phosphorus
a. Phosphorus was discovered by the German alchemist Henning Brand.
b. Phosphorus was discovered in 1674 or 1675.
2. Symbol: p, Atomic number:15, and Atomic mass: 30.97376 amu
a. The sources of symbol is from the Greek words phos (light) and phoros (bearer)
3. Number of protons& element:15 ,neutrons:16
4. We can obtained from Phosphate rock
5. Physical facts
a. Melting point: 44.1 °C (317.25 K, 111.38 °F)
b. Boiling point: 280.0 °C (553.15 K, 536.0 °F)
c. Destiny: 1.82 g/cm3
d. Abundance in the Earth’s crust: 1,050 parts per million by weight, 730 parts per million by moles
6. Use: fertilizers, detergents
7. Interesting facts: Hennig Brand discovered phosphorus in 1669, preparing it from urine, which naturally contains considerable quantities of dissolved phosphates. The name comes from the Greek word 'phosphoros', meaning bringer of light.
8. Sources: Never found free in nature, It is widely distributed in combination with minerals. Phosphate rock, which contains the mineral apatite, an impure tri-calcium phosphate, is an important source of the element. Large deposits are found in Russia, in Morocco, and in Florida, Tennessee, Utah, Idaho, and elsewhere.
[Sources]
→ (http://www.chemicalelements.com/elements/p.html)
→ (http://periodic.lanl.gov/elements/15.html)
→ (http://www.chemicool.com/elements/phosphorus.html)